package com.leyou.item.dto;

import com.leyou.common.dto.BaseDTO;
import com.leyou.common.entity.BaseEntity;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;

import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

@Data
@NoArgsConstructor
@EqualsAndHashCode(callSuper = false)
public class BrandDTO extends BaseDTO {

    private Long id;
    private String name;
    private String image;
    private Character letter;
    private List<Long> categoryIds;

    public BrandDTO(BaseEntity entity) {

        super(entity);

    }

    /**
     * 将PO转为DTO集合
     * @param list PO对象的集合
     * @param <T> PO的类型
     * @return DTO集合
     */
    public static <T extends BaseEntity> List<BrandDTO> convertEntityList(Collection<T> list) {

        if (list == null) {

            return Collections.emptyList();

        }

        return list.stream().map(BrandDTO::new).collect(Collectors.toList());

    }

}
